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Signal adjustment program, signal adjustment apparatus, and signal adjustment method

A signal adjustment and signal technology, applied in digital video signal modification, image communication, television, etc., can solve problems such as difficulty in detecting information and signal weakening

Active Publication Date: 2019-05-21
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] When illuminating light embeds information and irradiates an object and provides the user with an image of the scene including the object, the signal indicating the information embedded in the image may be weakened, making it difficult to detect the information from the image

Method used

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  • Signal adjustment program, signal adjustment apparatus, and signal adjustment method
  • Signal adjustment program, signal adjustment apparatus, and signal adjustment method
  • Signal adjustment program, signal adjustment apparatus, and signal adjustment method

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Embodiment Construction

[0029] Hereinafter, embodiments will be described in detail with reference to the drawings.

[0030] As an application example of visible light communication technology, it is assumed that information is embedded in the illumination light of a shooting place such as an event venue or a studio, and the object is irradiated, and the image of the scene including the object is provided through television (TV) broadcasting or Internet distribution, etc. to the user. The user shoots a screen of a TV receiver or a personal computer (PC) displaying the provided video with a camera, and can acquire additional information on objects at the shooting location, broadcast programs, and the like based on information embedded in the video.

[0031] However, when the reflectance of the object surface is equal to or less than a predetermined value, the signal indicating the embedded information may become weak. Furthermore, there are cases where compression processing is performed on captured ...

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Abstract

In the present invention, a computer analyzes a first video that is obtained by photographing an object which reflects light having a time-sequentially changeable signal embedded therein, and specifies, in an image included in the first video, a region where the signal is embedded. Then, the computer adjusts the signal embedded in the region, and outputs a second video including the adjusted signal.

Description

technical field [0001] The present invention relates to a signal adjustment program, a signal adjustment device and a signal adjustment method. Background technique [0002] As one of the visible light communication technologies that use visible light to transmit information, there is known a communication system in which a transmitting device irradiates an object with light superimposed with information, and a receiving device detects the superimposed information by photographing the object (for example, refer to Patent Document 1). . According to this communication system, it is possible to distribute information on an object irradiated with light to a camera-mounted smart device or the like. [0003] There are also known digital watermarking techniques for embedding additional information into images, techniques for superimposing additional information on compressed image data, and the like (for example, refer to Patent Document 2 to Patent Document 4). [0004] Patent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/387H04B10/116H04N19/467H04N21/234H04N21/8358
CPCH04B10/116H04N19/467H04N21/8358H04N2005/91335H04N5/772H04N21/4223H04N21/44008H04N21/440245H04N21/4334H04N5/913H04N9/8042H04N23/74H04N21/234H04N1/387
Inventor 仓木健介田中龙太
Owner FUJITSU LTD